diff --git a/ci/Dockerfile-linux64-curl b/ci/Dockerfile-linux64-curl
index dd58df136..8a7864343 100644
--- a/ci/Dockerfile-linux64-curl
+++ b/ci/Dockerfile-linux64-curl
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:18.04
 
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \